Observational Prospective Study Measuring the Impact of the Use of a Hypnotic Script Associated With Virtual Reality on the Pain of the Child's Sickle Cell During a Vaso-occlusive Crisis

The procedure will consist of a virtual reality program associated with suggestions of hypnoanalgesia, be added to usual care. Included patients will benefit from the Virtual Reality program combined with hypnoanalgesia suggestions for a period of 20 minutes. We will use a helmet with a built-in screen and an audio headset connected to a control room. Patients will watch an Virtual Reality sequence while listening to narratives designed for the hypnoanalgesia of the present pain.